Is it just me???

I can't be alone in how I feel lately about my kids. I love my kids more than anything. I think they are beautiful, funny, smart, amazing kids.... BUT they have been driving me crazy. As I am a stay at home mom, I am with them a lot. Probably too much. I feel like I am constantly telling them to stop doing that, stop fighting, don't do this, put that down, no you can't play video games again today, etc etc. I think they have a pretty good life. They have millions of toys, activities planned for them a lot of the time. They have a mom who plays with them and takes them places they like to go. A house full of things they like and activities to do. I sometimes feel like they are ungrateful and do not even know how much they have or how lucky they are. I think that a lot of kids do not know how good they have it, mine included. I don't like feeling like the mean mommy, the one who is always on them to stop doing things, and punishing them. I feel like it is too negative lately, that I am crabby a lot lately. I don't like it. I have a lot of guilt about it. I know that they have it good. I am not a bad mom. I just am human and I can't be happy all the time even though I wish I could. My son has just started to get into video games, and I swear he is obsessed. I let him play about 1 hr a day max. Well, he was having trouble falling asleep at night, so I told him yesterday that he couldn't play. ( I wanted to see if he would get to sleep better- he did). All day he was asking about it. I just wanted to set the law and him to drop it. He wouldn't. I was getting frustrated with him. I did try again today to let him play for about 30 min, and he again was having trouble falling asleep. Any suggestions??? Ban the video games??? Permanantly? It is so hard in today's society, where it is the norm for all kids to be into video games. I know it is stupid, but I don't want him to be the odd one out for not playing or having them. I was going to buy him a gameboy for Xmas this year, because it is the thing that EVERYONE has. But I know that is not the right reason to buy him one. I think it is the part of me that still wants to fit in. I was a very shy kid, and didn't feel like I fit in, and I don't want my kids to feel that way. Therefore, I tend to let them be like the other kids. Basically spoil them. Anyway, so I'm torn on the video games. That has been driving me crazy with him. And my daughter has been so bossy with me lately. She really thinks she runs the show. She orders people around and wants her way, and if she doesn't get it, she has a meltdown. She is 4, and I expect more from her. She can be very sweet and loving one minute and be sobbing and screaming the next if something isn't going her way. I know, part of that is normal but it still can get old after a while. I just sometimes feel like I am doing something wrong. I have major mommy guilt. I don't want to feel guilt, I just want to know I'm doing my best and that my kids are learning something good from me. I want to be a good example and show them how to be good kids and good people. This parenting thing is tough....